play.js

function playGame() {
    var left = $('.k-left .value>span').eq(0).text();
    var right = $('.k-right .value>span').eq(0).text();
    right = right.replace('−', '-');
    left = left.replace('−', '-');
    var resultLeft = eval(left.trim());
    var resultRight = eval(right.trim());
    console.log(resultLeft, resultRight);
    if (resultLeft > resultRight) {
        Game.answer(1);
    } else if (resultRight > resultLeft) {
        Game.answer(-1);
    } else {
        Game.answer(0);
    }
    setTimeout(playGame, 500);
}


playGame()